| package org.codehaus.jackson.map.ser.std; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| import org.codehaus.jackson.JsonGenerationException; |
| import org.codehaus.jackson.JsonGenerator; |
| import org.codehaus.jackson.map.BeanProperty; |
| import org.codehaus.jackson.map.JsonSerializer; |
| import org.codehaus.jackson.map.SerializerProvider; |
| import org.codehaus.jackson.map.TypeSerializer; |
| import org.codehaus.jackson.map.ser.impl.PropertySerializerMap; |
| import org.codehaus.jackson.type.JavaType; |
| |
| /** |
| * Fallback serializer for cases where Collection is not known to be |
| * of type for which more specializer serializer exists (such as |
| * index-accessible List). |
| * If so, we will just construct an {@link java.util.Iterator} |
| * to iterate over elements. |
| */ |
| public class CollectionSerializer |
| extends AsArraySerializerBase<Collection<?>> |
| { |
| public CollectionSerializer(JavaType elemType, boolean staticTyping, TypeSerializer vts, |
| BeanProperty property, JsonSerializer<Object> valueSerializer) |
| { |
| super(Collection.class, elemType, staticTyping, vts, property, valueSerializer); |
| } |
| |
| @Override |
| public ContainerSerializerBase<?> _withValueTypeSerializer(TypeSerializer vts) { |
| return new CollectionSerializer(_elementType, _staticTyping, vts, _property, _elementSerializer); |
| } |
| |
| @Override |
| public void serializeContents(Collection<?> value, JsonGenerator jgen, SerializerProvider provider) |
| throws IOException, JsonGenerationException |
| { |
| if (_elementSerializer != null) { |
| serializeContentsUsing(value, jgen, provider, _elementSerializer); |
| return; |
| } |
| Iterator<?> it = value.iterator(); |
| if (!it.hasNext()) { |
| return; |
| } |
| PropertySerializerMap serializers = _dynamicSerializers; |
| final TypeSerializer typeSer = _valueTypeSerializer; |
| |
| int i = 0; |
| try { |
| do { |
| Object elem = it.next(); |
| if (elem == null) { |
| provider.defaultSerializeNull(jgen); |
| } else { |
| Class<?> cc = elem.getClass(); |
| JsonSerializer<Object> serializer = serializers.serializerFor(cc); |
| if (serializer == null) { |
| // To fix [JACKSON-508] |
| if (_elementType.hasGenericTypes()) { |
| serializer = _findAndAddDynamic(serializers, |
| provider.constructSpecializedType(_elementType, cc), provider); |
| } else { |
| serializer = _findAndAddDynamic(serializers, cc, provider); |
| } |
| serializers = _dynamicSerializers; |
| } |
| if (typeSer == null) { |
| serializer.serialize(elem, jgen, provider); |
| } else { |
| serializer.serializeWithType(elem, jgen, provider, typeSer); |
| } |
| } |
| ++i; |
| } while (it.hasNext()); |
| } catch (Exception e) { |
| // [JACKSON-55] Need to add reference information |
| wrapAndThrow(provider, e, value, i); |
| } |
| } |
| |
| public void serializeContentsUsing(Collection<?> value, JsonGenerator jgen, SerializerProvider provider, |
| JsonSerializer<Object> ser) |
| throws IOException, JsonGenerationException |
| { |
| Iterator<?> it = value.iterator(); |
| if (it.hasNext()) { |
| TypeSerializer typeSer = _valueTypeSerializer; |
| int i = 0; |
| do { |
| Object elem = it.next(); |
| try { |
| if (elem == null) { |
| provider.defaultSerializeNull(jgen); |
| } else { |
| if (typeSer == null) { |
| ser.serialize(elem, jgen, provider); |
| } else { |
| ser.serializeWithType(elem, jgen, provider, typeSer); |
| } |
| } |
| ++i; |
| } catch (Exception e) { |
| // [JACKSON-55] Need to add reference information |
| wrapAndThrow(provider, e, value, i); |
| } |
| } while (it.hasNext()); |
| } |
| } |
| } |